The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2024
Filed:
Dec. 26, 2019
Joint-stock Company “tvel”, Moscow, RU;
Vladimir Vladimirovich Novikov, Moscow, RU;
Aleksandr Anatolevich Kabanov, Moscow, RU;
Antonina Vasilevna Nikulina, Moscow, RU;
Vladimir Andreevich Markelov, Moscow, RU;
Mihail Nikolaevich Sablin, Moscow, RU;
Nadezhda Konstantinovna Filatova, Moskovskaya Oblast, RU;
Vadim Nikolaevich Solovev, Moscow, RU;
Kirill Vladimirovich Ozhmegov, Moskovskaya Oblast, RU;
Sergei Vladimirovich Chineikin, Glazov, RU;
Sergei Vasilevich Lozitckii, Glazov, RU;
Aleksandr Gusmanovich Ziganshin, Glazov, RU;
JOINT-STOCK COMPANY “TVEL”, Moscow, RU;
Abstract
Method of manufacturing zirconium alloy tubular products containing (wt. %): niobium—0.9-1.7; iron—0.04-0.10; oxygen—0.03-0.10; silicon—less than 0.02, carbon—less than 0.02, and zirconium—as the base of the alloy. This includes an ingot melting by multiple vacuum arc remelting, mechanical processing of the ingot, heating, hot working of the ingot, subsequent mechanical processing for the production of tubular billets, heat treatment of the tubular billets, application of a protective coating and heating to a hot pressing temperature, hot pressing, removal of the protective coating, multi-stage cold radial forging, vacuum thermal treatment, multiple cold rolling runs with a total deformation degree of 50-80-% per run and a tubular coefficient of Q=1.0-2.7 with intermediate vacuum thermal treatment after each cold rolling operation, and final vacuum thermal treatment of the resulting tubular products carried out at the final size with subsequent final finishing operations.